[12443] in cryptography@c2.net mail archive
Re: question about rsa encryption
daemon@ATHENA.MIT.EDU (bear)
Tue Feb 4 10:09:39 2003
X-Original-To: cryptography@wasabisystems.com
X-Original-To: cryptography@wasabisystems.com
Date: Mon, 3 Feb 2003 19:13:16 -0800 (PST)
From: bear <bear@sonic.net>
To: "Scott G. Kelly" <scott@bstormnetworks.com>
Cc: crypto mailing list <cryptography@wasabisystems.com>
In-Reply-To: <3E3EC816.67907732@bstormnetworks.com>
On Mon, 3 Feb 2003, Scott G. Kelly wrote:
>I have a question regarding RSA encryption - forgive me if this seems
>amateur-ish -, but 'm still a beginner. I seem to recall reading
>somewhere that there is some issue with directly encrypting data with an
>RSA public key, perhaps some vulnerability, but I can't find any
>reference after a cursory look. Does anyone know of any issue with using
>RSA encryption to encrypt a symmetric key under the target's public key
>if the encrypted value is public (e.g. sent over a network)?
RSA is subject to blinding attacks and several other failure modes if
used without padding. For details on what that means, read the
cyclopedia cryptologia article on RSA.
http://www.disappearing-inc.com/R/rsa.html
Bear
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